package com.shawn.test;

interface Selector{
	boolean end();
	Object current();
	void next();
}
public class Sequence191 {
	private Object[] items;
	private int next =0;
	public Sequence191(int size){items = new Object[size];}
	public void add(Object x){
		if(next < items.length)
			items[next++] = x;
	}
	private  class SequenceSelector implements Selector{
		private int i=0;
		public boolean end() {return i==items.length;}
		public Object current(){return items[i];}
		public void next() {if (i<items.length) i++;}
	}
	public Selector selector(){
		return new SequenceSelector();
	}
	public static void main(String[] args) {
		Sequence191 sequence = new Sequence191(10);
		for(int i=0;i<10;i++)
			sequence.add(Integer.toString(i));
		Selector selector = sequence.selector();
		while(!selector.end()){
			System.out.print(selector.current()+" ");
			selector.next();
		}

	}

}
